如何将带有HTML实体的字符串转换为规范化形式？

Question

I want to use jquery to convert text containing strings like   
, etc into a more human-readable form. This works in jsfiddle:

<input id="stupid-approach" type="hidden">

function js_text(theVal) {
    $("#stupid-approach").html(theVal);
    x = $("#stupid-approach").html();
    return x;
}

alert(js_text("&eacute;"));

But I'm wondering if there is a way to do it that does not rely on a hidden field in the DOM?

Answer 1

just create an empty element, there's no need to have an actual hidden element in the DOM :

function js_text(theVal) {
    return $("<div />", {html: theVal}).text();
}

FIDDLE

Answer 2

in consideration of the feedback about jQuery's .html() method's evaluation of script tags, here is a safer native version that's not tooo unwieldy:

function js_text(theVal) {
    var div=document.createElement("div");
    div.innerHTML=theVal;
   return div.textContent;
}

use it instead of $(xxx).html() when you don't trust the input 100%

Answer 3

No. There's no purely programmatic way to do this that doesn't involve getting the browser to treat the string as HTML, as in your example. (Beware untrusted inputs when doing that, by the way - it's an injection attack waiting to happen.)

Answer 4

您应该能够做到：

return $('<div>'+ theVal + '</div>').html();